above ail, do not require continued motivation. All metnods snouid be subjected to rigorous epidemiologic evaluation before general use. (c) Communications research. While it is advisable to liberalize or repeal abortion laws, continued research is needed in methods of reaching the target population or population at risk of abortion (women with unplanned, unwanted pregnancies) with advice on the benefits of preventive, contraceptive methods. (d) Research on abortion techniques. Since we will have to live with abortion, research is needed to improve existing methods of pregnancy termination and to develop new methods that are easier, safer, less expensive, and that do not require hospitalization. Research on nonsurgical methods of abortion that can be used immediately upon suspicion of an unwanted pregnancy and that do not require the direct assistance of highly skilled medics should be undertaken. REFERENCES 1. Himes, E. Norman, Medical History of Contraception. New York: Gamut Press, 1963 (first published in 1936). p. 4. 2. Guttmacher, Alan F., "Therapeutic Abortions in a Large General Hospi- tal," Surg ClinN Amer, April 1957. pp. 459-461. 3. Aristotle, Politics, Book VII, Ch. 16 (1335b). 4. Hippocrates on Intercourse and Pregnancy, T. U. H. Ellinger, trans. New York: Henry Schuman, 1952. 5. Thompson, Warren, "Population," Amer J Social, Vol. 34, No. 6, May 1929. pp. 959-975. 6. Notestein, Frank, "Population—The Long View," Food for the World, T. W. Schultz, ed. Chicago: Univ. of Chicago Press, 1945. 7. Taeuber, Irene B. The Population of Japan, Princeton, N.J.: Princeton Univ. Press, 1958. 8. Pommerenke, W. T., "Abortion in Japan," Obstet Gynec Survey, Vol. 10, No. 2, April 1955. pp. 145-175. 9. Keyfitz, Nathan, and Wilhelm Flieger, World Population: An Analysis of Vital Data. Chicago: Univ. of Chicago Press, 1968. 10. Taeuber, Irene B., "Japan's Demographic Transition Re-examined," Pop- ulation Studies, Vol. 14, 1960-61, Part I, July 1960. p. 29, Table 1. 11. Koya, Yoshio, "Why Induced Abortions in Japan Remain High," Re- search in Family PLanning, Clyde V. Riser, ed. Princeton, N.J.: Princeton Univ. Press, 1962. pp. 103-110. 12. Japan Ministry of Health and Welfare, Report of Statistics on Eugenic Projection. Tokyo, published annually. 13. United Nations, Demographic Yearbooks 1949-1965. New York: U.N. Statistical Office, 1950-1966. 14. Muramatsu, Minoru, "Action Programs of Family Planning in Japan," Population Dynamics, Minoru Muramatsu and Paul Harper, eds. Baltimore: Johns Hopkins Press, 1965. pp. 67-76.cular significance is how developing countries can accomplish their demographic transition without precipitating an epidemic wave of abortion.